Gluepot



UNITED STATES CHARLES W. MABEY, 'OF INDIANAPOLIS, INDIANA.

GLUEPOT.

Specification of Letters Patent.

Patented May 3, 1921.

Application filed J'une 14,1920. Serial No. 388,756.

T 0 all whom t may concern-l Be it known that I, CHARLES W. MABEY, a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Improvements in Gluepots, of which the following is a specification.

This invention relates to a portable electrically heated glue-pot; and one of the principal objects of the invention consists in the provision of a glue-pot ofthe above character which, as a self-contained unitary structure, is simple in construction, highly eiiicient in heat retaining properties, and one in which many of the objectionable features associated with the use of the old and well known styles of glue-pots are eliminated.

A further object of the present invention consists in the provision of means for enabling the easy replacement of the heating elementswhen the same have Vbecome unfit for further use, and further, to enable the character of the heating elements lto be readily changed so as to adapt the glue-pot to the use of electric currents of different potential values. As an illustration, when a workman moves from lone job where an electric current of a Vgiven potential value is e-mployed to a point where a current of a different potential value is used.

The present invention particularlyv resides in the ready -adaptation of the present gluepot to the use of electrical currents of different potential values, together with such structural advantages which possess to a large degree the elements of heat retaining eihciency and economy.

The above objects, together with such others as may appear from a perusal of the following description and claims, are attained by means of, the construction illustrated in the accompanying drawings, forming a part hereof, in'which- Figure ,1 is a fragmentary detail plan view of my improved glue-pot with the cover omitted. Fig. 2 is a view partly in l side elevation and partly vin vertical section of the glue-pot.

Referring t0 the drawings, the external appearance of the present glue-pot 'is similar to that of an ordinary culinary pail or bucket, consisting of an outer shell or casing 10, having its upper edge bent outwardly into a horizontal flange 11. As shown, V'casing 10 is open at its glower end. Into the upper end of casing 10 I insert an intermediate receptacle 12, which is of less diameter than casing 10, so as to provide an intervening chamber between the outer periphery of receptacle 12 and the inner periphery of casing 10. Into this chamber I introduce a comparatively `thick insu-lation 14 for reducing fthe radiation of heat to a minimum. Theupper edge Aof receptacle 12 is bent'outwardly and thence downwardly into the outwardly disposed incline 16 where it terminates in a flange 15. Flanges 11 and 15 are held apart by suitable insulating material 17 so as to prevent the heat from within the glue-pot from affecting the outer casing 10. F langes 11 and 15 are properl secured together by the screw-bolts 18. pair of Aeye-bolts 19 are passed through flanges 11 and 15 to provide means for attaching the ends of a bale '20, whereby the glue-pot is rendered portable.

Attached -to the inner periphery of insulation 14 inany suitable manner is a thimble 21 which vextends below the bottom of yreceptacle 12 and forms a chamber for the reception of a circular disk 22usually composed of clay or similar material-which carries the heating elements, to be hereinafter described. Thimble 21 adds eiiiciency to the heat retaining properties of the glue-pot, by assisting in so confining the heat within the glue-pot that the temperature within the pot is raised more rapidly and thereby correspondingly shorten the time required for reducing the glue to a liquid state, than obtains in ythe -old forms of glue-pots. As before stated, disk 22, which is preferably a clay product, forms a base for mounting the heating elements. These heating elements comprise a plurality of columns of finely coiled wires 23 which columns rest within 'suitable channels 24C formed in the upper face o'f disk '22. Columns 23 may be connected in series in lorder to .vary the character of the heat temperature. Columns 23 'are connected to a switch 25 by which the electric current entering through conductor wires 26 maybe regulated. Disk 22 is heldV in operative position, so as to bring heating elements 23 into close proximity to the bottom-ef receptacle 12, 'bymeans of a .nutBO `which is arranged on a single threaded bolt 31 which is located centrally in the floorof receptacle 12. To further retard radiation `of heat from the interior of the glue-pot I introduce into the lower open end of casing 10 an insulating disk 32 which is also retained in position by a nut on bolt 3l. lt will be observed from the foregoing description that, after the heating elements 23 become worn and unlit for further service, or when it is desired to change and thereby adapt said heating elements to an electric current of a different potential value, their replacement can easily be effected by simply removing nut 33 and insulating disk 32 from bolt 3l and then remove nut from bolt 3l and nut 35 from terminal 36.

The inner receptacle LO for holding the glue material is preferably composed of copper and is arranged in the hollow cham bei' et receptacle 12. As shown in 2, glue-pot d0 is supported by the iianged portion of receptacle' l2 so that the bottom of receptacle 40 will stand suiiiciently above the loor of receptacle 12 to provide an intervening dry air chamber l1 which reduces the liability of the glue becoming overheated, Without the use oix water as obtains in the old and well-lnown glue-pots. The inner receptacle Zl0 is formed so that the diameter ot its upper end will close the upper end of the chamber in receptacle l2, the wall oit' receptacle l0 then tapering inwardly toward its bottom, so as to form an annular air space 4t2 between it and receptacle 12. Air space l2 is wedge shaped in cross section and is an extension o1"- air chamber 41, so that the dry air chamber ll extends around the exterior surface of inner receptacle l0. rllhe upper edge olreceptacle is formed uniquely so as to overcome certain objections which attend the use oic the old forms of glue-pots. ln the prior devices, the liquid glue worked its way over the upper edges oic the inner receptacles and ran over the meeting edges oi' the inner and outer receptacles until the two became so adhered together as to render it quite difficult to separate them. ln the present device the possibility of the glue working over the broad flaring edge of the inner receptacle 40 is reduced to a minimum. rlhis is accomplished by bending the metal adjacent the upper edge ofthe inner receptacle into a long outwardly sweeping curve, as at lf/l, and at the outer end ot the curve the metal is abruptly bent downwardly into a perpendicular l5 so that little or no surface is exposed to cause the liquid glue to flow outwardly. ln addition to the wide sweeping curve le imparted to tle upper edge of inner receptacle l0 for draining the liquid glue which may accidentally fall upon said curved surface back into the glue-pot, l also provide a wiper-rod l? whereby any excess of liquid glue may be removed from the brush as the latter is withdrawn from v the inner receptacle by the operator; This wiper-rod l? is positioned relatively to receptacle 40 so that there remains .little likelihood of any ot the .an open bottom casing,

:gardens excess glue alighting upon curved surface 4:4-, if the operator exercises a little care inl Y thereby cause the release oi wiperrod el?, when it is desired to disconnect the is hinged to receptacle l2 by means ge 5G. As shown, cover 55 is ci width and depth to completely inclcse the upper end el the inner receptacle Vl-O ci the glue-pot. @over 55 also is formed iior the purpose ot reducing, as liar as possible, many of the annoyances accompanying the use of the old-style glue-pots. lt will be noted that the metal lying along the upper marginal edge of the cover is bent to term a semi-circular roll 5T and that the central portion of the cover is arched up as at 58 independently of roll 57. On the lower surface of the cover a rib 59 is formed at thepoint ci meeting of the surface planes oli' the parts 57 and 58, and rib 59 is positioned to be within a vertical plane that coincides with the innerrperiphery of receptacle 40. Consequently, when sufficient steam has condensed or collected along the under surface of the central portion 58 oi" the cover to cause the collected water to be effected by gravitation the curved surface will convey the condensed water to rib 59 where it discharges back into the inner receptacle 40, and prevents the water Jfrom being discharged outside of the device.

Having thus fully. described my said invention, Awhat I desire to secure by Letters Patent, isi l. A glue-pot oiE the character described, an open bottom casing, an intermediate receptacle arranged within the hollow portion oi the casing and supported by the latter, a glue holding receptacle introduced into the hollow portion of the intermediate receptacle, a removable heating element supporting means arranged against the bottom of the intermediate receptacle, and means for removably securing said preceding means in operative position.

2. A glue-pot ot the character described,

an intermediate receptacle arranged within the hollow portion oi the casing and supported by the latter, a glue holding receptacle introduced into the hollow 'portion ci? the intermediate receptacle, a heating element arranged to contact the bottom of the intermediate receptacle, and a removable support for maintaining the heating elements in close proximity of the bottom of the glue holding receptacle.

3. A glue-pot of the character described, an open bottom casing having its upper edge terminating in a radial flange, a thimble of less diameter than the casing inserted into the latter, a non-conducting heat element introduced into the space intervening the thimble and casing, an intermediate receptacle inserted into the hollow portion of the thimble and having its upper edge terminating in an outwardly and downwardly disposed flange which rests upon the casing flange, and means for securing the two ianges together.

4. A glue-pot of the character described, an open bottom casing, an intermediate receptacle arranged in and supported by said casing, a removable glue holding receptacle arranged in and supported by said intermediate receptacle, a brush-wiper rod arranged across the open mouth of the glue holding receptacle, a heating element arranged to contact the bottom of the intermediate receptacle, a support for supporting the heating elements removably arranged in the open end oli' the casing, and `means for removably securing said support in operative position.

5. A glue-pot of the character described, an open bottom casing, an intermediate receptacle arranged in and supported by said casing, a removable glue holding receptacle arranged in and supported by said intermediate receptacle, and a cover hingedly secured to the .casing for closing the open end of glue holding receptacle, the central portion of the cover being arched upwardly and within the confine of the glue holding receptacle for draining back the excess of water accumulated on the under side of the cover into the glue holding receptacle.

In witness whereof I have hereunto set my hand and seal at Indianapolis, Indiana, this 9th day of June, A. D., one thousand nine hundred and twentl Y CHARLES W. MABEY. [11. s] 

